Rolex
Datejust 31 178271-0065— lug 16mm

The Rolex Datejust 31 ref. 178271-0065 has a lug width of 16mm. This measurement is specific to the 31mm Datejust case and must be matched precisely when selecting any aftermarket strap to ensure a correct fit between the lugs.

For the Datejust 31 in Rolesor Everose, alligator leather straps in warm tones — burgundy, cognac, plum — complement the Everose gold case beautifully. Alternatively, a vegetable-tanned calf leather or shell cordovan strap in dark bordeaux provides refined daily elegance that develops character over time. The correct lug width is 16mm.

To replace the strap on a Rolex Datejust 31, remove the 16mm spring bars fitted within the case lugs using a dedicated spring bar tool. Care must be taken to avoid scratching the Oystersteel case or the rose gold bezel. If in any doubt, it is advisable to consult a watchmaker or visit the Casati Milano atelier.

Yes. Any strap with a 16mm lug width and standard spring bar fittings is compatible with the Rolex Datejust 31 ref. 178271-0065. Milano Straps offers a curated selection of handcrafted leather, rubber and textile straps in the correct width, available online or as a bespoke commission through Casati Milano.

The lifespan of a leather strap depends on the material and care routine. A quality alligator strap, with moderate daily use and regular conditioning, typically lasts between 2 and 4 years. Shell cordovan and vegetable-tanned calf leather develop a unique patina over time and can last beyond 3 years if kept away from prolonged exposure to moisture and perspiration.